US9169708B2 - Method of in situ repair of a wellhead base flange - Google Patents
Method of in situ repair of a wellhead base flange Download PDFInfo
- Publication number
- US9169708B2 US9169708B2 US13/420,667 US201213420667A US9169708B2 US 9169708 B2 US9169708 B2 US 9169708B2 US 201213420667 A US201213420667 A US 201213420667A US 9169708 B2 US9169708 B2 US 9169708B2
- Authority
- US
- United States
- Prior art keywords
- tube
- base flange
- outside surface
- composite material
- layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000011065 in-situ storage Methods 0.000 title claims abstract description 13
- 239000002131 composite material Substances 0.000 claims abstract description 50
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 22
- 238000003825 pressing Methods 0.000 claims abstract 8
- 239000011324 bead Substances 0.000 claims description 16
- 238000005260 corrosion Methods 0.000 claims description 14
- 239000006260 foam Substances 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 11
- 230000007797 corrosion Effects 0.000 claims description 9
- 239000003822 epoxy resin Substances 0.000 claims description 8
- 229920000647 polyepoxide Polymers 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000005554 pickling Methods 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims 6
- 239000000945 filler Substances 0.000 claims 6
- 230000000630 rising effect Effects 0.000 claims 2
- 239000004568 cement Substances 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 3
- 239000000806 elastomer Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 2
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000009432 framing Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002825 nitriles Chemical class 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000002952 polymeric resin Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000011496 polyurethane foam Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
- E21B33/04—Casing heads; Suspending casings or tubings in well heads
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49718—Repairing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/53—Means to assemble or disassemble
Definitions
- the present invention relates to an in situ repair method for a base flange of a wellhead as well as an arrangement for the in situ repair of such a flange.
- the base flange of a wellhead is the element that makes it possible to provide the junction and ensure sealing between a tubing that comes from the bottom of the well and a surface facility from which connecting pipes convey what is produced by the well, for example oil, gas or water, to a distribution grid.
- the base flange which is installed during construction of the well, may undergo deteriorations over time, in particular due to corrosion, resulting from leaks.
- the base flange must be restored, it is necessary to stop the well, purge it, and disassemble the wellhead to be able to restore the base flange and adjacent elements, in particular the tube on which the wellhead is mounted, or, if applicable, install new pieces.
- the aim of the invention is to propose a solution to this problem.
- the aim of the invention is achieved with an in situ repair method for a base flange of a wellhead, comprising at least the following steps:
- the method according to the invention can also comprise at least one of the following steps:
- the aim of the invention is also achieved with an arrangement for the in situ repair of a base flange of a wellhead, which comprises at least one layer of a polymerized composite material applied on the damaged and previously pickled surfaces of the base flange and an adjacent piece such as the tube on which the wellhead is mounted, respectively, an elastic seal intended to be placed on the composite material previously applied when the latter is polymerized, at the junction between the base flange and the adjacent piece, and a reinforcing collar configured to press the seal on the damaged surface.
- This arrangement can also comprise, when the base flange is placed on a tubing comprising a double wall below the flange, the space between the two walls for example being filled with cement,
- FIG. 1 is a diagrammatic perspective view of the bottom portion of a wellhead
- FIG. 2 is a cross-sectional view of the junction between a wellhead and the tubing of the well
- FIG. 3 is a cross-sectional view of the position of the base flange relative to the back of the cave of the connector.
- the repair of the base flange of a well is done in situ, i.e. without disassembling the wellhead.
- the well therefore remains operational.
- the damage to be repaired generally being situated below the base flange, more particularly at the junction between the base flange and the tubing on which the wellhead is engaged, the repair consists of removing the traces of corrosion, protecting the cleaned surface with a suitable coating, and applying a polymer resin or any other polymerizable composite material suitable to protect the flange from being accessed by corrosive vapors or liquids.
- FIG. 1 The design of a well to which the repair method according to the invention applies is visible in FIG. 1 .
- a wellhead 1 is fixed on a production pipe or tubing 2 coming from the bottom of the well through a base flange 3 .
- the flange 3 comprises a lower surface 31 on which the heads 33 of screws 32 by which the flange 3 is fixed to the wellhead 1 bear upon tightening.
- the lower surface 31 can be at a right angle, as in the appended drawings, but also at obtuse angles of up to about 160°.
- a gas well can be provided with a triple tubing 2 comprising a gas production tube 21 , an intermediate tube 22 on which the base flange 3 is screwed, and an outer tube 23 .
- This triple tubing 2 constitutes two security annuluses 24 , 25 to prevent the escape of gas and pollution from the environment.
- the first annulus 24 is situated between the production tube 21 and the intermediate tube 22 .
- This annulus is filled with water and must not be pressurized. If, on the contrary, this annulus is pressurized, this indicates a leak at one of the elements at the bottom of the well.
- the second annulus 25 is situated between the intermediate tube 22 and the outer tube 23 and is filled with cement 26 .
- the gas rises to the surface through the first annulus 24 and reaches the base flange 3 level.
- the junction threading between the intermediate tube 22 and the base flange 3 not necessarily being sealed, the leak arises at the surface in the cave. More particularly, corrosion occurs on the lower surface 31 of the flange 3 , but also on the outer wall of the intermediate tube 22 , close to the junction between the flange 3 and the tube 22 .
- the invention proposes to seal this leak by applying one or more polymer layers 4 framing an O-ring 5 , the whole being compressed by a metal reinforcing collar 6 forced by studs 7 that replace the screws 32 by which the base flange 3 is initially secured with the wellhead 1 .
- the corroded surfaces of the flange 3 and the tube 22 are pickled and carefully cleaned, in particular degreased, so as to then be able to apply a composite polymer repair material, in particular an elastomer, to two components.
- the pickling is advantageously done by sandblasting or grit blasting with particles fine enough to obtain a roughness in the vicinity of 75 micrometers of the surface of the tube 22 and the surface 31 of the flange 3 .
- the pickled surfaces are treated with an anti-corrosion coating to prevent any new corrosion until a composite protective material is applied.
- the composite repair material which is advantageously an elastomer polymer material with two components, is applied on the surfaces to be treated in one or more layers 4 according to the indications by the material's manufacturer, in particular relative to the polymerization duration and temperature determined by the manufacturer.
- the first of the three mandatory steps of the inventive method is characteristic of the method according to the invention, the pickling and anti-corrosion steps being able to be modified depending on the specific nature and extent of the particular damage to be repaired.
- the site provided for the O-ring 5 is prepared by filling a zone 9 situated between the screw pitch of the tube 22 and the site of the O-ring with several layers of polymer repair composite materials, according to the stipulations by the manufacturer of the composite material.
- the O-ring 5 which is for example made from nitrile, is placed in the angle formed by the lower surface 31 of the base flange 3 and the outer surface of the tube 22 .
- the place present on either side of the O-ring is filled with at least one, generally several layers 10 of composite elastomer polymer repair materials.
- the reinforcing collar 6 which itself is protected from corrosion by a coating, is positioned below the base flange 3 .
- the reinforcing collar 6 which is designed in two half-shells to be able to place it around the flange 3 , is kept on the studs 7 using nuts 8 whereof the first nut secures the corresponding stud 7 in the base flange 3 and whereof two other nuts, used as nut/locknut, secure the collar 6 on the corresponding stud 7 as shown in FIGS. 2 and 3 .
- a sealing device is made with an annular bead 11 made from polyurethane foam and a cast crown 12 made from epoxy resin so that, when the resin is set, it has an upper surface 13 sloping toward the outside of the tube 23 so as to prevent water stagnation and corrosion.
- a small tube 14 is mounted in the bead 11 so as to capture the gas to monitor whether there is a pressure increase or to analyze the gas or determine the leakage rate.
- a valve and a pressure gauge are mounted on the free end of the small tube 14 .
Abstract
Description
Claims (21)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1152482A FR2973063B1 (en) | 2011-03-25 | 2011-03-25 | METHOD FOR IN SITU REPAIR OF A BASE FLANGE OF A WELL HEAD |
FR1152482 | 2011-03-25 |
Publications (2)
Publication Number | Publication Date |
---|---|
US20120240373A1 US20120240373A1 (en) | 2012-09-27 |
US9169708B2 true US9169708B2 (en) | 2015-10-27 |
Family
ID=45808341
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/420,667 Expired - Fee Related US9169708B2 (en) | 2011-03-25 | 2012-03-15 | Method of in situ repair of a wellhead base flange |
Country Status (7)
Country | Link |
---|---|
US (1) | US9169708B2 (en) |
EP (1) | EP2503095B1 (en) |
CN (1) | CN102691489B (en) |
DK (1) | DK2503095T3 (en) |
FR (1) | FR2973063B1 (en) |
PL (1) | PL2503095T3 (en) |
RU (1) | RU2564307C2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104439886B (en) * | 2014-10-21 | 2016-08-17 | 山东钢铁股份有限公司 | A kind of vacuum drying oven diffusion pump cast iron housing crackle strengthening with external bonding device and crackle Bonded Repair method |
Citations (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1913778A (en) * | 1930-12-01 | 1933-06-13 | Bozidar J Ukropina | Concrete pipe joint |
US2667865A (en) * | 1948-12-31 | 1954-02-02 | Herman Harry Hirsch | Device for forming pipe joints |
US3563276A (en) * | 1968-08-29 | 1971-02-16 | Bonded Products Inc | Pipe joint cocoon |
FR2297990A1 (en) | 1975-01-17 | 1976-08-13 | Carnahan David | Replaceable shoe for piston type blow-out arrester sealing joint - used in underwater well head in deep water |
US4003430A (en) | 1974-01-02 | 1977-01-18 | Carnahan David A | Apparatus for the replacement of seals in a well ram type blow out preventer |
US4166479A (en) * | 1977-05-09 | 1979-09-04 | Cleavenger Associates, Inc. | Blind liner for service pipes |
US4390186A (en) | 1982-02-04 | 1983-06-28 | Combustion Engineering, Inc. | Metal-to-metal ribbed seal |
US4552183A (en) * | 1976-05-10 | 1985-11-12 | Readyseal Limited | Repairing leaks in pipelines carrying fluent medium |
US4673122A (en) * | 1986-05-22 | 1987-06-16 | Dubey Thomas W | Method and apparatus for repairing copper pipes |
US4852913A (en) * | 1987-01-08 | 1989-08-01 | Brooks Albert J | Apparatus for repairing pipes |
FR2637316A1 (en) | 1988-10-04 | 1990-04-06 | Smf Int | Method and device for fixing a casing head onto the top end of a well casing |
CA1289869C (en) | 1986-06-23 | 1991-10-01 | Denis Morizot | Well head with adjustable flow for the exploitation of biogas |
CA2104695A1 (en) | 1991-12-28 | 1993-06-29 | Alexei Alexeevich Efimkin | Method for regaining mud circulation in operating well and device for its embodiment |
US5345972A (en) * | 1992-03-18 | 1994-09-13 | Snam S.P.A. | Method for repairing local damage to pipelines by applying cladding with an interposed protective sheath |
US5690148A (en) * | 1996-06-21 | 1997-11-25 | Ziu; Christopher G. | Closure fitting and flexibility support assembly for double-containment piping systems |
US6217688B1 (en) * | 1999-01-25 | 2001-04-17 | Phillip G. Landers | Method of repairing a flanged pipe joint |
US6321491B1 (en) * | 1999-01-15 | 2001-11-27 | Ronald F. DiMauro | Bulkhead door seal |
US6385899B1 (en) * | 1994-07-15 | 2002-05-14 | Sachiko Mary Treganza | Decorative plant stand with integrated drainage and rotation features |
US20040016467A1 (en) * | 2001-04-24 | 2004-01-29 | Blackmore Mark D. | Method of forming repair material for conuit interface area and for repairing a non-linear conduit with a fiber repair material |
US6997260B1 (en) * | 2003-03-06 | 2006-02-14 | Bruce Trader | Method of repairing tubular members on oil and gas wells |
US7168743B2 (en) * | 2002-09-17 | 2007-01-30 | Petronas Research & Scientific Services Sdn. Bhd. | Means to seal terminal ends of pipe sleeves |
US20080216938A1 (en) * | 2004-12-03 | 2008-09-11 | Illinois Tool Works Inc. | System and method for pipe repair |
US7472476B2 (en) * | 2005-09-21 | 2009-01-06 | Offshore Joint Services, Inc. | Method of applying joint infill cladding to pipe |
US20100012215A1 (en) * | 2008-07-18 | 2010-01-21 | Tdw Delaware, Inc. | Composite Load Transferring Technique |
US20100089484A1 (en) | 2006-12-19 | 2010-04-15 | Vallourec Mannesmann Oil & Gas France | Device for protecting a male end of a threaded tubular connection component, having open and closed positions, and associated methods and mounting machines |
US20110284115A1 (en) * | 2010-05-21 | 2011-11-24 | Pipestream B.V. | Methods for Repairing a Defective Pipeline |
US8113242B1 (en) * | 2010-01-19 | 2012-02-14 | Odyssian Technology, Llc | Composite repair for pipes |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SU576388A1 (en) * | 1973-11-30 | 1977-10-15 | Восточный научно-исследовательский нефтегазовый институт по технике безопасности и промсанитарии | Method of securing the flanges of well head fixtures |
SU979778A1 (en) * | 1980-06-04 | 1982-12-07 | Украинский научно-исследовательский и проектно-конструкторский институт подземной гидравлической добычи угля "УкрНИИгидроуголь" | Pipeline quick-release connection |
SU1499051A1 (en) * | 1987-12-29 | 1989-08-07 | Волго-Уральский Научно-Исследовательский И Проектный Институт По Добыче И Переработке Сероводородсодержащих Природных Газов | Method of sealing leaks of flange connections |
SU1702066A1 (en) * | 1988-09-26 | 1991-12-30 | Проектно-Строительное Объединение "Саратовсельхозводопроводстрой" | Device for eliminating leakage from bell-joint of pipeline |
RU2352849C1 (en) * | 2007-12-03 | 2009-04-20 | Государственное образовательное учреждение высшего профессионального образования Саратовский государственный технический университет | Pipe installation device |
CN201521758U (en) * | 2009-10-15 | 2010-07-07 | 刘永峰 | Tube well broken hole repair device |
-
2011
- 2011-03-25 FR FR1152482A patent/FR2973063B1/en not_active Expired - Fee Related
-
2012
- 2012-03-13 EP EP12159302.4A patent/EP2503095B1/en active Active
- 2012-03-13 DK DK12159302.4T patent/DK2503095T3/en active
- 2012-03-13 PL PL12159302T patent/PL2503095T3/en unknown
- 2012-03-15 RU RU2012111563/03A patent/RU2564307C2/en active
- 2012-03-15 US US13/420,667 patent/US9169708B2/en not_active Expired - Fee Related
- 2012-03-22 CN CN201210078636.9A patent/CN102691489B/en not_active Expired - Fee Related
Patent Citations (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1913778A (en) * | 1930-12-01 | 1933-06-13 | Bozidar J Ukropina | Concrete pipe joint |
US2667865A (en) * | 1948-12-31 | 1954-02-02 | Herman Harry Hirsch | Device for forming pipe joints |
US3563276A (en) * | 1968-08-29 | 1971-02-16 | Bonded Products Inc | Pipe joint cocoon |
US4003430A (en) | 1974-01-02 | 1977-01-18 | Carnahan David A | Apparatus for the replacement of seals in a well ram type blow out preventer |
FR2297990A1 (en) | 1975-01-17 | 1976-08-13 | Carnahan David | Replaceable shoe for piston type blow-out arrester sealing joint - used in underwater well head in deep water |
US4552183A (en) * | 1976-05-10 | 1985-11-12 | Readyseal Limited | Repairing leaks in pipelines carrying fluent medium |
US4166479A (en) * | 1977-05-09 | 1979-09-04 | Cleavenger Associates, Inc. | Blind liner for service pipes |
US4390186A (en) | 1982-02-04 | 1983-06-28 | Combustion Engineering, Inc. | Metal-to-metal ribbed seal |
US4673122A (en) * | 1986-05-22 | 1987-06-16 | Dubey Thomas W | Method and apparatus for repairing copper pipes |
CA1289869C (en) | 1986-06-23 | 1991-10-01 | Denis Morizot | Well head with adjustable flow for the exploitation of biogas |
US4852913A (en) * | 1987-01-08 | 1989-08-01 | Brooks Albert J | Apparatus for repairing pipes |
FR2637316A1 (en) | 1988-10-04 | 1990-04-06 | Smf Int | Method and device for fixing a casing head onto the top end of a well casing |
CA2104695A1 (en) | 1991-12-28 | 1993-06-29 | Alexei Alexeevich Efimkin | Method for regaining mud circulation in operating well and device for its embodiment |
US5345972A (en) * | 1992-03-18 | 1994-09-13 | Snam S.P.A. | Method for repairing local damage to pipelines by applying cladding with an interposed protective sheath |
US6385899B1 (en) * | 1994-07-15 | 2002-05-14 | Sachiko Mary Treganza | Decorative plant stand with integrated drainage and rotation features |
US5690148A (en) * | 1996-06-21 | 1997-11-25 | Ziu; Christopher G. | Closure fitting and flexibility support assembly for double-containment piping systems |
US6321491B1 (en) * | 1999-01-15 | 2001-11-27 | Ronald F. DiMauro | Bulkhead door seal |
US6217688B1 (en) * | 1999-01-25 | 2001-04-17 | Phillip G. Landers | Method of repairing a flanged pipe joint |
US20040016467A1 (en) * | 2001-04-24 | 2004-01-29 | Blackmore Mark D. | Method of forming repair material for conuit interface area and for repairing a non-linear conduit with a fiber repair material |
US7472722B2 (en) * | 2002-09-17 | 2009-01-06 | Petronas Research & Scientific Services Sdn. Bhd. | Method of permanently repairing a pipeline section using a combination wrap and sleeve structure |
US7168743B2 (en) * | 2002-09-17 | 2007-01-30 | Petronas Research & Scientific Services Sdn. Bhd. | Means to seal terminal ends of pipe sleeves |
US6997260B1 (en) * | 2003-03-06 | 2006-02-14 | Bruce Trader | Method of repairing tubular members on oil and gas wells |
US20080216938A1 (en) * | 2004-12-03 | 2008-09-11 | Illinois Tool Works Inc. | System and method for pipe repair |
US7673654B2 (en) * | 2004-12-03 | 2010-03-09 | Illinois Tool Works Inc. | System and method for pipe repair |
US7472476B2 (en) * | 2005-09-21 | 2009-01-06 | Offshore Joint Services, Inc. | Method of applying joint infill cladding to pipe |
US20100089484A1 (en) | 2006-12-19 | 2010-04-15 | Vallourec Mannesmann Oil & Gas France | Device for protecting a male end of a threaded tubular connection component, having open and closed positions, and associated methods and mounting machines |
US20100012215A1 (en) * | 2008-07-18 | 2010-01-21 | Tdw Delaware, Inc. | Composite Load Transferring Technique |
US8113242B1 (en) * | 2010-01-19 | 2012-02-14 | Odyssian Technology, Llc | Composite repair for pipes |
US20110284115A1 (en) * | 2010-05-21 | 2011-11-24 | Pipestream B.V. | Methods for Repairing a Defective Pipeline |
Also Published As
Publication number | Publication date |
---|---|
EP2503095B1 (en) | 2015-06-10 |
FR2973063B1 (en) | 2015-01-16 |
DK2503095T3 (en) | 2015-09-14 |
CN102691489A (en) | 2012-09-26 |
RU2564307C2 (en) | 2015-09-27 |
RU2012111563A (en) | 2013-09-20 |
EP2503095A1 (en) | 2012-09-26 |
CN102691489B (en) | 2017-04-12 |
US20120240373A1 (en) | 2012-09-27 |
PL2503095T3 (en) | 2016-01-29 |
FR2973063A1 (en) | 2012-09-28 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US6276401B1 (en) | High temperature composite pipe wrapping system | |
JP5876245B2 (en) | Repair method of flange joint and jig for repair | |
US6884373B1 (en) | Process for securing a branch assembly to a pipeline | |
US6990718B2 (en) | Tee connection to a pipeline | |
US9169708B2 (en) | Method of in situ repair of a wellhead base flange | |
CA3153061A1 (en) | Wall and method of fabricating such wall | |
AU2002321600A1 (en) | Tee connection to a pipeline | |
EP2706021A1 (en) | A method for making an inner metal wall inside a tank and a tank having a double wall | |
US6612341B2 (en) | Securing shell assemblies to pipelines | |
AU2019101759A4 (en) | Pipe repair | |
US20110127045A1 (en) | Method of Sealing Annular Space Between Inner and Outer Upright Tubes | |
US9933103B1 (en) | Apparatus and method for sealing a leak from a tubular member | |
US8449800B2 (en) | Method of strengthening the connection between pipe sections in high pressure pipelines | |
Ball et al. | Prestressed concrete cylinder pipe rehabilitation repair and replacement: large diameter success stories | |
KR20130005163U (en) | Jig For Pipe's Airtight Testing | |
CN108426684B (en) | Pressure testing device and method for manhole cover plate of storage tank | |
US20190040989A1 (en) | Composite conical sleeve | |
GB2352489A (en) | Tee Connection to a pipeline | |
US20220146037A1 (en) | Systems and Methods for Repairing Piping | |
JP2011007306A (en) | Repairing method for piping | |
JP7062567B2 (en) | Underground tank upper box and how to bury the tank upper box | |
RU2424964C2 (en) | Method of sealing micro leaks in pipelines and vessels | |
Di Cesar Silva et al. | Structural Reinforcement and Leak Sealing with Composite Materials | |
CA2814759A1 (en) | Pipeline enclosure | |
JP2021021443A (en) | Method of repairing nozzle or pipe |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: STORENGY, FRANCE Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:DEVILLEGER, DENIS;REEL/FRAME:028231/0098 Effective date: 20120514 |
|
ZAAA | Notice of allowance and fees due |
Free format text: ORIGINAL CODE: NOA |
|
ZAAB | Notice of allowance mailed |
Free format text: ORIGINAL CODE: MN/=. |
|
STCF | Information on status: patent grant |
Free format text: PATENTED CASE |
|
MAFP | Maintenance fee payment |
Free format text: PAYMENT OF MAINTENANCE FEE, 4TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1551); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY Year of fee payment: 4 |
|
FEPP | Fee payment procedure |
Free format text: MAINTENANCE FEE REMINDER MAILED (ORIGINAL EVENT CODE: REM.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
|
LAPS | Lapse for failure to pay maintenance fees |
Free format text: PATENT EXPIRED FOR FAILURE TO PAY MAINTENANCE FEES (ORIGINAL EVENT CODE: EXP.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
|
STCH | Information on status: patent discontinuation |
Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
|
FP | Lapsed due to failure to pay maintenance fee |
Effective date: 20231027 |